Car-truck.



No. 694,942. Patented Mar. u I902.

' c. M. CARNAHAN.

CAR TRUCK.

(Application filed Feb. 20, 1901.,

"2 Meaty-Sheet 1.

(N0 Model.)

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No. 694,942. Patented Mar. Ii, I902.

0. ll. DABNAI-IAN.

GAR TRUCK.

1Applicution filed Feb. 20. 19JL| 2 SheetsSheet 2.

(No Model.)

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partly in section.

UNITED STATES PATENT OFFICE.

CYRUS M. CARNAHAN, OF ALLEGHENY, PENNSYLVANIA.

CAR-TRUCK.

srncrrroarron forming part of Letters Patent knees 1,942, dated March 11, 1902.

' Application filed February 20, 1901. erial No. 48,185. (No model.)

To aZZ whom it may concern.-

Beit known that I, GYRUsM. CARNAHAN, a citizen of the United States of America, and a resident of Allegheny, county of Allegheny, State of Pennsylvania, have invented certain new and useful Improvements in Car-Trucks, of which the following is a specification, reference being bad to the accompanying drawings, forming part of this specification, in which Figure 1 is a side elevation of my improved cartruck. Fig. 2 is a plan View thereof, Fig. 3 is a detail View illustrating a modification providing for a lower bolster-bearing. Fig. 4 is a longitudinal View indicated by the line IV IV of Fig. 2, showing the interior faces of the truck. Fig. 5 is an inner View, partly in section, indicated by the line V V of Fig. 2. Fig. 6 is atransverse sectional view indicated by the line VI VI of Fig. 2. Fig. 7 is a similar detail View indicated by the line VII VII of Fig. 4. Fig. 8 is a cross-sectional view indicated by the line VIII VIII of Fig. 4. Fig. 9 is a sectional detail View illustrating the modification shown in Fig. S'and at a right angle thereto. Fig. 10 is a detail view of one end of one of the side members, illustrating a construction wherein the journal-box is removed vertically. Fig. 11 is a detail view illustrating the manner of suspending the brake-shoe.

My invention relates to the class of car'- trucks, more especially to'trucks composed entirely of metal; and it consists of the novel construction and arrangement of the parts, as will be more fully hereinafter set forth.

Referring to the drawings, the main side member of the truck is composed of a channel-beam 2, the flanges 3 of which project outwardly, such channels extending for the full length of the truck. Midway of the truck, below channel 2, is a similar channel 4, the ends of which terminate at the inner sides of the journal-boxes 5 and constitute, with the reinforcing members, the inner journal-box housings, and such lower channel, as will be seen, is of the same depth as the journal-box.

' The lower edges of the upper channel 2 likewise constitute, with the supplemental reinforcing members, the upper bearing edges of the journal-box housings.

lower channel 4, as will be seen, corresponds The length of'the to the distance hetween thejournal-boxes,

and a lower supplemental plateor bar memher 6 is secured to the lower channel 4 and to the reinforcing members and extends at each end beyond the endsof the channel 2, thus providing lower inclosing sides for the j on rnal-box housings. This member 6, which I have shown as a bar, may, as is obvious, consist of any other suitable shape, as a channel, angle, I-beam, &c. The remaining outer inclosing side of the journal-box housings consists of a short section'7, preferably made of I-beam or other suitable shape, the inner bearing edges of which are provided with reinforcing-angles 8. removable fordnsertion or removal of the wheels, axles, and journal-boxes and is held in position by bolts 9, which pass through the member-6, flanges of member 7, and flanges and reinforcing members of the upper channel 2.

' In Fig. 10 I have shown a modified construction wherein the section 7 is rigidly incorporated with the under outer end of member 2 by riveting, as shown, and the end of member 6 is made to consist of a separate removable section 6, which constitutes the lower housing of the journal-box. This removable section 6" is held in position by bolts 9 at each side, as shown, passing through the flanges of the main members and of their reinforcing members, by which means when the bolts are tightened the journal-box is securely retained in position by the section 6 and all of the parts are firmly connected together. This construction is available and of advantage when it is desired. to insert or bers corresponding to the flange members of V the channel.

Midwayof the truck, extending across it, resting upon members 6,and conn'ected thereto and with the'channell by rivets and angles 12, is a transverse bolster-suppo'rt,which I have shown as being composed of a channel 13, which provides a good bearing-for the bolster-springs and is rigidly connected to the opposite member of the truck. I

Above the sides of the support 13, upon the inner face of each side member, are secured vertical angle members 14,conn'ected to chanangle-brackets 17. A feature of importance of these cross members 16 is that they are slantingly disposed, as'clearly shown in Figs. 1 and 4, whereby the upper edge projects outwardly over the lower edge, corresponding approximately to the line of contour of the wheels, and a particular advantage of thisconstruction is in the facility whereby the brake-beams are supported from such cross members 16 as thus disposed, the attachment being made directly to the web of the channel, and whereby it is vertically above the point of suspension of the brake-beam, adjacent to the wheel periphery, as I have indicated in the dotted lines in Fig. 4:. A further advantage of this construction is in the great bracing strength of the end members 16, they approximating positions between the vertical and horizontal, and thereby offering great resistance to torsional strain, while, as will be seen, the connections of the upper ends with the side members are more distant from each other than the lower ends, and both connections are sufficiently far apart to constitute, with the side members, a rectangular brace of great strength and rigidity, whereby the efficiency of the truck is enhanced. While I prefer the slanting arrangement, good results may be had by arranging the brace members 16 vertically or at other angles than that shown, and I do not desire to be confined to the construction set forth. As thus constructed my improved truck is very compact, comparatively light in weight, composed of parts that may be cut to length of merchantrolled-steel shapes, and it is generally well adapted to the objects in View. The inner faces of the main channel members 2 and 4 being unobstructed by flanges or rivets provide a good bearing-surface for the ends of the bolster, which fit snugly against them between the angles 14. lVhen for any reason it is desired to provide a lower bearing for the bolster, a supplemental member 18 may be attached to the lower side of the channel 4, the member 6 in such case being lowered around it in the form of a truss 6', as clearly shown in Figs. 3 and 9, in which construction the angles 14 are extended down, connecting the members 4 and 18, and the bolster-support 13 rests upon the bar extension 6 and is likewise secured to member 18 by angles 12 and riveted.

WVhile I have shown the various parts of the truck as, being composed of structural sections which are well adapted to be incor-,

porated with the truck as I have designed it, it is clear that other sections or shapes may be substituted by the skilled mechanic within the scope of the following claims, and I do not therefore desire to be limited to the exact construction as shown and described, but to include all such changes and variations therefrom as would be within the province of the skilled mechanic.

Having described my invention, what I claim is 1. In a car-truck, a side member composed of an upper structural member for its full length, a lower structural member connected therewith, terminating at and forming the inner sides of the journal-box housings, supplemental end members formingthe outer sides of the journal-box housings, and a lower member forming the lower sides of the journal-box housings.

2. In a car-truck, a side member composed of an upper structural member for its full length,an intermediate lower structural member terminating at and forming the inner sides of the journal-box housings, a lower member extending for the full length forming the lower sides of the journal-box housings, and

intervening removable end sections forming the outer sides of the journal-box housings. v

3. In a car-truck, aside member composed of an upper channel member for its full length, an intermediate channel member terminating at and forming the inner sides of the journal-box housings, a lower. plate member: eX- tending for the full length forming the lower sides of the journal-box housings and intervening removable I-beam end section forming the outer sides of the journal-box housings.

4. In a car-truck, a side member composed ofan upper channel member forits fulllength, an intermediate channel member terminating at and forming the inner sides of the journal-box housings, a lower plate member extending for the full length forming the lower sides of the journaLbox housings, and intervening removable I-beam end sections forming the outer sides of the journal-box housings, with means for connecting the members, substantially as set forth.

5. In a car-truck, a side member composed of an upper channel member for its full length, an intermediate channel member terminating at and forming the inner sides of the journal-box housings, a lower plate member extending for the full length forming the lower sides of the journal-box housings, intervening removable I-beam sections forming the outer sides of the journal-box housings and supplemental angle members riveted to and connecting the members, substantially as set forth. I

6. In a car-truck, a side member composed of an upper channel member for its full length, an intermediate channel member terminating ICC necting the removable end sections with the upper and lower members, substantially as set forth.

7. In a car-truck, aside member composed of an upper channel member for its full length,

e an intermediate channel member,terminating at and forming the inner sides of the jourrial-box housings, a lower plate member extending for-the full length forming the lowersides of the journal-box housings, intervening removable I-beamend-sections forming the outer sides of the journal-box housings, supplemental members riveted 'to and oonnecting the members, Vertical guiding angle members for the bolster riveted to the inner plane side of the upper and intermediate channel members, and end bolts connecting the removable end sections with the upper and lower members,substantially asset forth.

8, A car-truck composed of sides comprising upper structural members, intermediate structural members terminating at and forming theinner housing-walls, lower membersinelosing the journal-boxes, and outer end sections, with cross connecting members providing a bolster-support, substantially as set forth.

9. A car-truck composed of sides comprising upper structural members, intermediate stru'cturalmembers terminatingat and forming inner housing-Walls, lower members inclosing the journal-boxes, removable end sec-' tions, with a cross connecting member pro viding a bolster-support, and supplemental cross connecting members, substantially as setfortli. s

ber, 1900.

10. A car-truck composed of sides comprising upper structural members, intermediate structural members, terminating at and forming inner housing-walls, lower members inclosing thejournal-boxes and removable end sections, with a cross connecting member pro viding a bolster-support, and'supplemental cross connecting bracing members tilted outwardlyand providing brake-beam'supports,

substantially as set forth.

'11. In a car-truck of the class described, cross connecting and bracing members consisting of channel-bars, rigidly connected at each end to the side members, and tilted outwardly whereby the upper flange projects beyond the lower'flange' for the purposes asset 6o forth 12. A c'ar-trnckcomposed of sides compris Zing upper structural members,- intermediate structural members terminating at and forming inner housing walls, lower members inclosing the journal-boxes removable'end sections, angle members riveted to and connecting the members and forming vertical bolsterguides, and a crossconnecting member,-'pro-' 'viding a bolster-support, substantiallj as setforth.

13. A car-truck composed of sides comprising'upper structural members, intermediate structural members, terminating at and forming inner housing-wall, lower members inclos- 7 5 ing the journal 4 boxes, removable end sections, angle members riveted toand connect ing the members and forming vertical bolster-' guides, across connecting member providing a bolster-support, and" supplemental cross connecting-and bracing members'on each side of such members, substantially as set forth. Signed at Pittsburg this'fith day of Decem CYRUS M; 'OARNAHAN.

VVitnesses': I

' PETER J. EDWARDS, QM; CLARKEL- 

